Radio Shack TRS-80 Voxbox - Page 12

Running
the
Application
Programs
Lunar Program
In
LUNAR,
you try to land a rocket
on the moon
without
crashing.
It's
a
real challenge, since
the amount offuel
is limited
and
the
effect
of
burning a given amount offuel varies
with
the mass
of
the ship.
As you
burn fuel the mass gets smaller,
and the
change in
velocity
occurring
for each pound of fuel
burned increases.
You can
set
the burn
rate as large as
you like.
Each
entry,
for
example
"FIVE", ZERO, ZERO"
(500),
represents
the burn
rate
for
the next
ten seconds in pounds of fuel
per second
. For
example,
if
you
say
"FIVE"
(5),
you will burn
50 pounds offuel.
If
you say
"ZERO"
(p),
you
will
burn no fuel.
Make your entries in
the form
—
(digit)(digit)
. . . FIRE
If
you or
the
system makes
an entry
mistake,
you can
clear
a
digit
by
saying "BACKSPACE".
After saying
"FIRE", the
computer will
compute
the
10
second
burn
and display elapsed
time in
seconds,
distance
to
the
moon in
miles
per hour, and
pounds of fuel
remaining.
Good Luck!
Plot Program
This program shows
you a plot of
your voice.
This
is
the raw
data
which
the computer works
with to recognize
words.
The
top
plot is
a
measure
of energy in the frequency
range
900 to 2200
hertz.
High
(trace up) means
energy present. The
second
line
is energy
in the
100
to
900
hertz
energy range. Notice
that vowels
(AH,
OO,
EE, etc.)
have high energy in
the low band
while many
consonants
(S, F,
V,
etc.) don't.
The next (lower)
plot is an estimate
of the
dominant
frequency
in
the
band 900 to
5000
hertz.
The lowest
plot is
an
estimate
of
the
dominant
frequency
in the band
200 to 900
hertz.
All
of these
values
are measured
at 10 millisecond
intervals.
10